mirror of
https://github.com/projectcapsule/capsule.git
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90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
// Copyright 2020-2023 Project Capsule Authors.
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// SPDX-License-Identifier: Apache-2.0
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package defaults
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import (
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"context"
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"encoding/json"
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"fmt"
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corev1 "k8s.io/api/core/v1"
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schedulev1 "k8s.io/api/scheduling/v1"
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"k8s.io/client-go/tools/record"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
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capsulev1beta2 "github.com/projectcapsule/capsule/api/v1beta2"
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"github.com/projectcapsule/capsule/pkg/webhook/utils"
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)
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func mutatePodDefaults(ctx context.Context, req admission.Request, c client.Client, decoder *admission.Decoder, recorder record.EventRecorder, namespace string) *admission.Response {
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var err error
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pod := &corev1.Pod{}
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if err = decoder.Decode(req, pod); err != nil {
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return utils.ErroredResponse(err)
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}
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pod.SetNamespace(namespace)
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var tnt *capsulev1beta2.Tenant
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tnt, err = utils.TenantByStatusNamespace(ctx, c, pod.Namespace)
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if err != nil {
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return utils.ErroredResponse(err)
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}
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if tnt == nil {
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return nil
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}
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allowed := tnt.Spec.PriorityClasses
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if allowed == nil || allowed.Default == "" {
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return nil
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}
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priorityClassPod := pod.Spec.PriorityClassName
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var mutate bool
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var cpc *schedulev1.PriorityClass
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// PriorityClass name is empty, if no GlobalDefault is set and no PriorityClass was given on pod
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if len(priorityClassPod) > 0 && priorityClassPod != allowed.Default {
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cpc, err = utils.GetPriorityClassByName(ctx, c, priorityClassPod)
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// Should not happen, since API already checks if PC present
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if err != nil {
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response := admission.Denied(NewPriorityClassError(priorityClassPod, err).Error())
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return &response
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}
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} else {
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mutate = true
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}
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if mutate = mutate || (utils.IsDefaultPriorityClass(cpc) && cpc.GetName() != allowed.Default); !mutate {
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return nil
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}
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pc, err := utils.GetPriorityClassByName(ctx, c, allowed.Default)
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if err != nil {
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return utils.ErroredResponse(fmt.Errorf("failed to assign tenant default Priority Class: %w", err))
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}
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pod.Spec.PreemptionPolicy = pc.PreemptionPolicy
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pod.Spec.Priority = &pc.Value
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pod.Spec.PriorityClassName = pc.Name
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// Marshal Pod
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marshaled, err := json.Marshal(pod)
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if err != nil {
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return utils.ErroredResponse(err)
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}
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recorder.Eventf(tnt, corev1.EventTypeNormal, "TenantDefault", "Assigned Tenant default Priority Class %s to %s/%s", allowed.Default, pod.Namespace, pod.Name)
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response := admission.PatchResponseFromRaw(req.Object.Raw, marshaled)
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return &response
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}
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